PAGE 64 — STARRETT MAGNETIC INDICATOR BASE

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Long Island Indicator Service

PROFESSIONAL REPAIRS & SALES IN THE U.S.A. SINCE 1959

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Roy Meyer and team


Starrett Magnetic Base for Indicators

with Swivel Post Assembly
made in USA

Test indicators and dial indicators need some form of support in order to be useful. The magnetic base is indispensable in many situations. The magnetic base attaches soundly to metallic surfaces allowing you to use your indicator with confidence. There are a large variety of mag bases on the market, from cheap Chinese no-brand to costly Swiss Interapid. In between you will find the popular Noga, the ever-evolving Mitutoyo and the stalwart Starrett shown on this page.

At at time when many of us are lamenting the loss of jobs overseas, it would only make sense to support some of our own industries. Starrett is one such company that still manufactures many of its products in America. Owning and using one of these Starrett magnetic bases can give you a sense of pride knowing that you helped keep fellow Americans in business.

This American made magnetic base is compatible with Starrett test, back-plunger, dial, AGD, and miniature-dial indicators, as well as similar indicators from other manufacturers such as Mitutoyo, Brown & Sharpe, etc. (and even low cost Chinese indicators).

Powerful, permanent magnetic base holds firmly to steel or iron surfaces – horizontally, vertically, upside-down. Push-button turns magnetic force on or off for quick, one-hand set-up and take-down. V-step adapts base to horizontal or vertical arbors and chucks. There is an extra 1/4-20 NC tapped hole in side of base for indicator mounting post. Three precision ground magnetic contact surfaces (plus V-step). Black wrinkle finish on non-working surfaces.

Features of Starrett 657A:

  • A. 657P Magnetic Base is 1-15/16" x 1-5/8" x 1-7/8" (50 x 40 x 48mm) deep.
  • B. Swivel Cap Slot permits 90o post travel to horizontal position.
  • C. Post rotates 360o.
  • D. 657F Indicator Swivel Post Assembly is 6-1/2" (165mm) high (less threaded end). Assembly consists of items B, C, E, F, G.
  • E. Fine-Adjusting Screw. Turn to zero set indicator.
  • F. Upper arm is 2" (50mm) long with a 5/16" (8mm) diameter and swings more than 180o; friction joint holds it in position.
  • G. 7/32" (5.5mm) diameter step, 1/2" (13mm) long.
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Starrett 657A: check price and stock

Companion Reference Guide for Test Indicators
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